HYDRAULIC FLUID COMPOSITION FOR BUFFER

Title:

HYDRAULIC FLUID COMPOSITION FOR BUFFER

Document Type and Number:

WIPO Patent Application WO/2006/129889

Kind Code:

A1

Abstract:

A hydraulic fluid composition for buffers which keeps the friction between the sealing material and the piston rod in a buffer high to thereby mitigate vehicle body falter and improve comfortableness in riding. The hydraulic fluid composition for buffers comprises a lube base oil and, incorporated therein, either [I] (A) a phosphoric ester or phosphorous ester having a C_3-30 hydrocarbon group or a salt of any of the esters and (B) a C_6-30 (un)saturated fatty acid and/or an ester of the fatty acid or [II] (C1) a succinic acid (anhydride)/polyamine reaction product having an imino group/amino group proportion of 15 or lower and a number-average molecular weight of 1,500 or lower and having an alkyl or alkenyl group and/or a derivative of the reaction product, the ingredient (C1) comprising at least one member selected among (C1a) ones having an imino group/amino group proportion of from 3 to 15 and containing essentially no boron and (C1b) ones having an imino group/amino group proportion less than 3.

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Inventors:

SHIRAHAMA SHINICHI (JP)
AOKI TORU (JP)
ARIMOTO NAOZUMI (JP)

Application Number:

PCT/JP2006/311680

Publication Date:

December 07, 2006

Filing Date:

June 05, 2006

Export Citation:

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Assignee:

NIPPON OIL CORP (JP)
SHIRAHAMA SHINICHI (JP)
AOKI TORU (JP)
ARIMOTO NAOZUMI (JP)

International Classes:

C10M133/16; C10M141/10; C10M149/22; C10M161/00; C10M129/28; C10M129/68; C10M137/02; C10N30/00; C10N40/08; F16F9/32; F16F9/36

Foreign References:

JP2002194376A	2002-07-10
JP2004035624A	2004-02-05
JPS55165996A	1980-12-24
JPH09111277A	1997-04-28
JPH07224293A	1995-08-22
JPH04314794A	1992-11-05
JPH06179885A	1994-06-28
JPH06145684A	1994-05-27

Attorney, Agent or Firm:

Morita, Nobuyuki (5-8 Nishi-shimbashi 3-chome, Minato-k, Tokyo 03, JP)

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